Matt, Eggshell, Satin, Gloss: The Sheen Level Guide for London Homes
A practical guide to paint sheen levels for London interiors — the real differences between matt, soft sheen, eggshell, satin and gloss, where to use each finish, and how sheen interacts with period architecture and artificial light.
The Decision Most People Get Wrong
Walk into most London paint suppliers and you will find an array of finish options that can seem arbitrary: flat, matt, soft sheen, silk, eggshell, satin, semi-gloss, full gloss. The difference between a flat matt and a 10% gloss emulsion is not merely aesthetic — it affects how a surface reflects light, how easily it cleans, how durable it proves, and how much it reveals or conceals the imperfections that are endemic in London's period plaster walls.
Getting sheen level wrong is one of the most common decorating errors in residential projects. A room painted in the wrong finish rarely looks dramatically bad, but it never quite looks right either.
Understanding the Gloss Scale
Sheen level is measured as a percentage of light reflected at a standardised angle. Approximate values:
- Dead flat / flat matt: 0–5% gloss
- Matt: 5–10% gloss
- Soft sheen / velvet: 10–20% gloss
- Eggshell: 20–40% gloss (the name refers to the finish of an eggshell, not a specific measurement)
- Satin: 40–60% gloss
- Semi-gloss: 60–75% gloss
- Full gloss: 75–90%+ gloss
These are approximate; different manufacturers apply these labels inconsistently. Little Greene's "Intelligent Matt" sits at around 7% gloss; their "Intelligent Eggshell" at around 25%. Farrow & Ball's "Estate Emulsion" is a true flat matt; their "Modern Eggshell" is a water-based product at around 30% gloss. Always check the product data sheet if precision matters.
Matt and Flat Matt: The Period Interior Standard
A dead flat or true matt finish — Estate Emulsion from Farrow & Ball, Absolute Matt from Little Greene, or Johnstone's Flat Matt — produces the richest, most saturated colour. Because it reflects no specular light, it does not create highlights or sheen across the wall surface. This makes it the correct choice for period plaster walls with undulations, minor repairs, and the texture that comes from genuine horsehair plaster or older lime work. Sheen amplifies imperfections; matt conceals them.
The limitation is cleanability. A true matt finish will mark when rubbed and cannot be washed repeatedly. It is therefore inappropriate for hallways, stairwells, kitchens, bathrooms, and anywhere children or pets are active.
In London townhouses, dead flat is often reserved for formal reception rooms and master bedrooms — spaces that see relatively light use and where the quality of colour matters most.
Soft Sheen: The Compromise Position
Products marketed as soft sheen, velvet, or silk sit in the 10–20% gloss range. They offer improved washability over matt while remaining forgiving on imperfect walls. Many developers use soft sheen as a standard throughout-flat specification because it is practical and inoffensive.
The problem is that soft sheen can look slightly plastic in certain lights, particularly under the LED downlights that are now ubiquitous in converted flats. It also tends to flatten colour slightly compared to a true matt. For a period London home, we rarely specify soft sheen on walls; the step up to eggshell or the step down to matt is usually more appropriate.
Eggshell: The Joinery Standard, Increasingly Used on Walls
Eggshell is the standard professional choice for all painted woodwork — skirting, architraves, doors, window frames, and panelling — because it is durable, washable, and provides enough sheen to define joinery without looking like gloss.
On walls, eggshell has become increasingly popular in kitchens, bathrooms, hallways, and children's rooms where a washable surface is needed but the flat-plastic look of vinyl silk is unacceptable. Little Greene's Intelligent Eggshell and Farrow & Ball's Modern Eggshell (both water-based) are the most commonly specified products in prime London residential work.
The caveat remains: eggshell at 25–35% gloss will show wall imperfections clearly. If your plaster is in anything less than excellent condition, flatten the sheen or invest in a more thorough preparation.
Satin: Where Eggshell Isn't Enough
Satin sits above eggshell and below gloss. On woodwork it is occasionally specified for very high-use areas — utility rooms, back staircases, commercial kitchens — where maximum cleanability outweighs aesthetic considerations. On walls it tends to look noticeably shiny and is rarely used in quality London residential work, though it appears in some contemporary commercial interiors deliberately for effect.
Gloss: Right Surface, Right Application
Full gloss is appropriate on external metalwork, railings, front doors, and period joinery where a high-shine traditional finish is specified. It is not appropriate on walls in any normal residential context. In a period London property, gloss woodwork against flat matt walls creates the correct tonal contrast — the sheen of the joinery reads as definition against the depth of the wall colour.
Gloss is unforgiving: every brush mark, run, and surface imperfection will be visible. Quality gloss work requires thorough preparation, correct primer, and either skilled brush application or spray finishing.
Sheen and Artificial Light in London Homes
London properties — particularly basement flats, rear-facing rooms, and north-facing rooms in terraces — often rely heavily on artificial light. The interaction between sheen level and light source matters:
- Warm LED or incandescent light on a matt wall produces a soft, warm effect with good colour rendering
- The same light on a satin or semi-gloss wall creates visible hotspots and can make a room feel harder
- Eggshell is the practical compromise: enough sheen to brighten a dark room without creating harsh reflections
Practical Recommendations by Room
- Reception rooms, bedrooms: Dead flat or matt emulsion on walls; eggshell on woodwork
- Hallways, staircases: Eggshell on walls (for cleanability); eggshell or satin on woodwork
- Kitchens: Eggshell on walls; eggshell or satin on joinery and cabinets
- Bathrooms: Specialist bathroom matt or eggshell emulsion; eggshell on woodwork
- Children's rooms: Soft sheen or eggshell on walls; eggshell on woodwork
- Front doors and external metalwork: Oil-based or acrylic-alkyd gloss
If you would like a specification for your property based on its rooms, condition, and use, request a free quote and we will advise on products and finishes as part of our quotation process.